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发明名称
Water valve
摘要
申请公布号
US2158436(A)
申请公布日期
1939.05.16
申请号
US19370165353
申请日期
1937.09.23
申请人
PENN ELECTRIC SWITCH CO.
发明人
SHAW BURTON E.
分类号
F25B49/02
主分类号
F25B49/02
代理机构
代理人
主权项
地址
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